Multiply rectangles as shown by the dashed lines, then choose an auxiliary vanishing point anywhere on the horizon line[br][br]Note: blue points are interactive

Draw a line through VP (aux) and D and intersect it with a line parallel to the horizon line and mark off point Q

1. Intersect lines through VP (aux) and F/N/M with the green line[br][br]2. Choose a point O on the line segment FD and draw a line segment OD[sub]1[/sub] parallel to ED, then intersect a line through VP (aux) and O with the green line and mark off point S

1. Measure distance between S and Q, call it d. Plot points W and V at distance d to the left of T and U respectively[br][br]2. Intersect lines through VP (aux) and W/V with DM and mark off points Z/A[sub]1[/sub], draw line segment ZC[sub]1[/sub] and A[sub]1[/sub]B[sub]1[/sub] parallel to DE

1. Draw a line through VP1 perpendicular to the horizon line called vanishing line[br][br]2. Extend diagonals DD[sub]1[/sub], FC[sub]1[/sub], NB[sub]1 [/sub](pink) and DG, FJ, NL (blue) and notice they converge on the vanishing line, which means we could have used points on the vanishing line for proportional division of the rectangles